Joel Reymont wrote:
> I thought I would try to reproduce the issue but I can't.
> 
> I get a different issue instead. It doesn't like the following line
> 
>       | `FunArgDecl _ -> {< found = true >}
> 
> or `FunargDecl to be precise.
> 
> Also, what does {< found = true >} mean?
> 
>     Thanks, Joel

Obscure functionality.  It's object cloning (of self), with a modified
instance variable.  See 3.14 of the ocaml manual

E.